Document Detail


Effect of unialgal diets on the composition of fatty acids and sterols in juvenile ark shell Tegillarca granosa Linnaeus.
MedLine Citation:
PMID:  22443233     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
This study has investigated the effects of six different unialgal diets (Chaetoceros calcitrans, Platymonas helgolandica, Chlorella sp., Isochrysis galbana, Nannochloropsis oculata, and Pavlova viridis) on the composition of fatty acids and sterols in juvenile ark shell Tegillarca granosa Linnaeus. The best feeding effects on the growth of shellfish were found in Chaetoceros calcitrans, followed by Isochrysis galbana and Pavlova viridis, while Chlorella sp. and Nannochloropsis oculata exhibited relatively poor effects. The fatty acid and sterol compositions in the six microalgae and the juvenile ark shell after feeding were analyzed, and thirty-nine fatty acids and eighteen sterols were identified. Although the results demonstrate a close correlation between the sterol compositions in algal species and juvenile ark shell, similar correlation was not observed between fatty acids. In the juvenile ark shell fed microalgae, the ratio of total saturated fatty acids (SFA) rapidly decreases, while the proportion of total polyunsaturated fatty acids (PUFAs) increases considerably. The abundances of AA, EPA, and DHA increase most significantly in shellfish with better growth (fed on C. calcitrans, I. galbana, and P. viridis). The number of sterol species is reduced, but the total sterol content in groups fed on corresponding microalgae increases, and abundant plant sterols, instead of cholesterol, are accumulated in juvenile ark shell fed on appropriate microalgae I. galbana and P. viridis. Therefore, to be more conducive to the human health, I. galbana and P. viridis, out of the six experimental microalgae, recommended for artificial ark shell culture.
Authors:
Jilin Xu; Haibo Zhou; Xiaojun Yan; Chengxu Zhou; Peng Zhu; Bing Ma
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-3-23
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  -     ISSN:  1520-5118     ISO Abbreviation:  -     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-3-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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